Finding the Third Proportional to 139,212 and 303,264

Step by Step Solution

1. Step 1: Write the proportion equation
   139,212 : 303,264 = 303,264 : x
2. Step 2: Convert to fraction form
   139,212/303,264 = 303,264/x
3. Step 3: Cross multiply
   139,212x = 303,264 × 303,264
4. Step 4: Simplify right side
   139,212x = 91,969,053,696
5. Step 5: Solve for x
   x = 91,969,053,696/139,212
6. Step 6: Final answer
   x = 660,640.27